Outlet valve for water-closet tanks



Jan. 12 1932. CARSON 1,840,697

OUTLET VALVE FOR WATER CLOSET TANKS Filed June 13, 1930 diam/Mid lmwz,

Patented Jan. 12, 1932 I ALEXANDER A. oAnsomor seamen, MASSACHUSETTS oUrLE'r vALvn role w rER-oLosrlr rnivxs Application filed me 13,

I 'In connection with water-closets of the- "siphon 'type it is desirable that the bowl of the closet be left substantially full of water after each flushing to constitute a trap or I a '5 water seal. In order to insure-this it is 'nec- 'essary that suificient' water be "supplied for the purpose after "siphonic action-of the closet has ceased. While the discharge pipe from the supply tank is entirely full of water flowing to the closet', this supply is so great that entryof air to stop the siphonic" action may be impossible. According to this in vention,-theref ore, means are providedto restrict the flow from thetank 'asufiicient" time'before cutting it ofi entirely so as to in-i sure stopping of the siphonic action whilethere is yet suflicient Water in the tank to fill the bowl before the supply from the tank is completely shut ofi. In my Patent No."

' if 1,457,018, granted May 29, 1923, a construetion is shown in which the assurance of refill of the bowl is dependent on the setting of a" float which controls the shut ofl valve. While" this is effective when the valve closes only 1 after the flow has been reduced by a lowering of the hydrostatic head to a point where the" siphonic action of the closet can no longer be maintained, it requires careful setting of the float and I have found that many plumbers,

' do not take proper care with this adjustment' so that the desired results may not be obtained. In accordance with the present in-i'- vention, therefore, means entirely independ-{ ent of any close adjustment of the float are provided to insure the proper action so that no particular care or skill on the plumbers part is required.

For a more complete understanding of this" invention, reference may be had to the accompanying drawings in which Figure 1 is a section through the outlet portion of the supply tank showing one form of the valve in elevation.

Figure 2 is a horizontal section on lin of Figure 1.

Figure 3 is a vertical section on line 33 of Figure 1.-

Referring to the drawings, at 1 is indicated" the bottom wall of a supply tank, a portion' of the side wall of which is shown at 2.-

:plete maybe providedof any desired type,

1930. Serial No. 460,832,

Through an opening 8 in the' bottom wall is fixed the valve'mechanism, which, as shown, comprises a pipe member 4 having an annular flange 5 seated on the top of the tank wall member 1 with a suitable packing inter-- posed and pressed into sealing engagement therewith, as by'means of a nut 6 threaded on the lower threaded portion of the member 4-. Above the flange 5 the member 4;iS provided with an annular wall 7, the upper edge of which at 8 forms a seat for the valve 9. Asshown this valve 'comprisesa pair of upper'and lower disks 10 and 11 which may be of metal enclosing between them a disk 12 of leather or similar material suitable to act as a' yielding wall seatingon the edge- 8. 'lhesendisk's-are shown as held clamped'together by means of nuts 15 -'-threaded-on a valve stem 16.

lhis stem' '16 is show-n as slidably guided through aplate 17 whiohis supported-from the member 4 as by-means of sp'ac'edstaridards'QO and-2l rising therefrom. l lhe lower portionof the member 4- beneat-h the standard'21 may be extended in the form of a hollow member 22 opening into the Wall/portion] beneath its "upper'edge and having an'ysuitable means for supportin'g'the lowerend of an overflow pipe 23 -by*which should the Water-in the tank'rise to a point nearits top, it mayesca'pe through the overflow pipe to the sewer, flhis construction as "just i-described is" substantially the same as that in my patent hereinbefore referred to and'is shown merely by way of example, as it will be evident that the particular type of. valve mechanism is not essential to this invention. Mechanism. for'raising the valve in ordertoflu'sh'the closet and for holding it raised until such time as flushing is comas, for example, as shown in my patentlheree inbefore mentioned.

, Means are provided according to this invention; however, for restricting the escape of water through the outlet before its level-has descended to the top-0f the portion 7, this restriction being suflicient to prevent the Water being discharged through the whole area of the outlet pipe thus to permit the entrance of air thereto and insure the breaking of the slphonic action of the closet. As shown in Figures 1, 2 and 8 this means may comprise a member which as shown is annular and has a vertical wall portion 26 and a horizontal wall portion 27. The vertical wall portion 26 is intended to be supported with its upper edge above the seat 8 of the valve, as shown best in Figure 3 so that when the level of the water in the tank falls to the top of this wall 26, it can no longer flow thereover and enter the discharge pipe. As the water level drops from the top of this wall member 26 as at a (see Figure 3)'to near the point I) on a level with the seat 8, the water discharged through the outlet pipe must pass thereto through a restricted passage 28 formed be-,

tween the inner edge of the wall 27 and the outer face of the member 7, which as shown in Figure 2, is much smaller than the area of the outlet pipe so that the outlet pipe cannot be full of Water during this flow. This insures the breaking of the siphonic action but provides for afiow of water after this break I ing ing having standards for a sufficient time before the valve is allowed to seat to insure the filling of the closet bowl.

As shown in these figures the member 25. may have a vertical slot in its wall 26, as shown at 29, to engage in a constricted portion 80 of the post 21 and may rest on a portion of the extension 22. At its opposite end it may be fixed to the standard 20 as by means ofa screw 32.

Certain embodiments of this invention hav- 1n thus been described, it should be evident outlet, means carried by said standards for supporting a valve seating against said outlet, and an annular member supported on said casing about said standards and having a wall extending above said outlet and a horizontal wall extending toward the wall of said outlet sutficiently to define therewith a passage for water to said outlet ofless area than said outlet.

4. A tank valve comprising a casing having an annular wall, an outlet extending vertically within said wall, a hollow extension from beneath the outlet for the attachment of an overfiowpipe, said casing having standards projecting above said outlet, means carried by said standards for supporting a valve seated against said annular wall, one oi said standards rising from said extension, and an annular member having spaced portions resting on said extension at either side of the standard supported thereby and secured to another of said standards, said annular member having a horizontal wall at its lower end extending toward said annular wall sufficiently to define therewith a passage for iivater to said outlet of less area than said out- In testimony whereof I have aflixed my signature.

V ALEXANDER, A. CARSON.

to those skilled in the art that various changes and modificationsmay be made therein without departing from the spirit or scope of this invention as defined by the appended claims.

I claim:

1. A tank valve comprising a casing havan outlet extending vertically therethrough, a hollow extension from beneath the top of said outlet for attachment of a tank overflow pipe, and an annular dam supported in part on said extension and projecting above the top of said outlet and acting to re-.

strict the flow to said outlet when the level of water reaches substantially the top of said dam to an amount less than the discharge area of said outlet.

2. A tank valve comprising a casing having a vertical outlet therethrough,said casprojecting above said outlet, means carried by said standards for supporting a valve seating against said outlet, and an annular member supported on said casing about said standards and having a wall extending above said outlet, there being space beneath the top of said wall leading to said outlet of less area than the area of said outlet.

3. A tank valve comprising a casing having a vertical outlet therethrough, said casing having standards projecting above said 

